Disable language pair
From Protemos Wiki
Language pairs page: https://cloud.protemos.com/lang/index
Note: You can’t delete the pairs of languages that you have already used in the system ("Yes" in the column "Іn use" and no "Delete" button).
But you can disable a language pair if you don't want to see it in the drop-down list when choosing a language, for instance, while creating a new project.
To do so, press the "Disable" button:
You can enable this language pair (the button appears after you disable it) if you want to see this language pair in the drop-down list again: